<?php
class smtp{
	/* Public Variables */

	var $smtp_port;

	var $time_out;

	var $host_name;

	var $log_file;

	var $relay_host;

	var $debug;

	var $auth;

	var $user;

	var $pass;

	/* Private Variables */
	var $sock;

	/* Constractor */

	function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)

	{

		$this->debug = FALSE;

		$this->smtp_port = $smtp_port;

		$this->relay_host = $relay_host;

		$this->time_out = 30; //is used in fsockopen()
		#

		$this->auth = $auth;//auth

		$this->user = $user;

		$this->pass = $pass;

		#

		$this->host_name = "localhost"; //is used in HELO command
		$this->log_file = "";

		$this->sock = FALSE;

	}

	/* Main Function */

	function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")

	{

		$mail_from = $this->get_address($this->strip_comment($from));

		$body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);

		$header = "MIME-Version:1.0\r\n";

		if($mailtype=="HTML"){

			$header .= "Content-Type:text/html\r\n";

		}

		$header .= "To: ".$to."\r\n";

		if ($cc != "") {

			$header .= "Cc: ".$cc."\r\n";

		}

		$header .= "From: $from<".$from.">\r\n";

		$header .= "Subject: ".$subject."\r\n";

		$header .= $additional_headers;

		$header .= "Date: ".date("r")."\r\n";

		$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";

		list($msec, $sec) = explode(" ", microtime());

		$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";

		$TO = explode(",", $this->strip_comment($to));

		if ($cc != "") {

			$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));

		}

		if ($bcc != "") {

			$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));

		}

		$sent = TRUE;

		foreach ($TO as $rcpt_to) {

			$rcpt_to = $this->get_address($rcpt_to);

			if (!$this->smtp_sockopen($rcpt_to)) {

				$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");

				$sent = FALSE;

				continue;

			}

			if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {

				$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");

			} else {

				$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");

				$sent = FALSE;

			}

			fclose($this->sock);

			$this->log_write("Disconnected from remote host\n");

		}

		return $sent;

	}

	/* Private Functions */

	function smtp_send($helo, $from, $to, $header, $body = "")

	{

		if (!$this->smtp_putcmd("HELO", $helo)) {

			return $this->smtp_error("sending HELO command");

		}

		#auth

		if($this->auth){

			if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {

				return $this->smtp_error("sending HELO command");

			}

			if (!$this->smtp_putcmd("", base64_encode($this->pass))) {

				return $this->smtp_error("sending HELO command");

			}

		}

		#

		if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {

			return $this->smtp_error("sending MAIL FROM command");

		}

		if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {

			return $this->smtp_error("sending RCPT TO command");

		}

		if (!$this->smtp_putcmd("DATA")) {

			return $this->smtp_error("sending DATA command");

		}

		if (!$this->smtp_message($header, $body)) {

			return $this->smtp_error("sending message");

		}

		if (!$this->smtp_eom()) {

			return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");

		}

		if (!$this->smtp_putcmd("QUIT")) {

			return $this->smtp_error("sending QUIT command");

		}

		return TRUE;

	}

	function smtp_sockopen($address)

	{

		if ($this->relay_host == "") {

			return $this->smtp_sockopen_mx($address);

		} else {

			return $this->smtp_sockopen_relay();

		}

	}

	function smtp_sockopen_relay()

	{

		$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");

		$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);

		if (!($this->sock && $this->smtp_ok())) {

			$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");

			$this->log_write("Error: ".$errstr." (".$errno.")\n");

			return FALSE;

		}

		$this->log_write("Connected to relay host ".$this->relay_host."\n");

		return TRUE;;

	}

	function smtp_sockopen_mx($address)

	{

		$domain = ereg_replace("^.+@([^@]+)$", "\1", $address);

		if (!@getmxrr($domain, $MXHOSTS)) {

			$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");

			return FALSE;

		}

		foreach ($MXHOSTS as $host) {

			$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");

			$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);

			if (!($this->sock && $this->smtp_ok())) {

				$this->log_write("Warning: Cannot connect to mx host ".$host."\n");

				$this->log_write("Error: ".$errstr." (".$errno.")\n");

				continue;

			}

			$this->log_write("Connected to mx host ".$host."\n");

			return TRUE;

		}

		$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");

		return FALSE;

	}

	function smtp_message($header, $body)

	{

		fputs($this->sock, $header."\r\n".$body);

		$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));

		return TRUE;

	}

	function smtp_eom()

	{

		fputs($this->sock, "\r\n.\r\n");

		$this->smtp_debug(". [EOM]\n");

		return $this->smtp_ok();

	}

	function smtp_ok()

	{

		$response = str_replace("\r\n", "", fgets($this->sock, 512));

		$this->smtp_debug($response."\n");

		if (!ereg("^[23]", $response)) {

			fputs($this->sock, "QUIT\r\n");

			fgets($this->sock, 512);

			$this->log_write("Error: Remote host returned \"".$response."\"\n");

			return FALSE;

		}

		return TRUE;

	}

	function smtp_putcmd($cmd, $arg = "")

	{

		if ($arg != "") {

			if($cmd=="") $cmd = $arg;

			else $cmd = $cmd." ".$arg;

		}

		fputs($this->sock, $cmd."\r\n");

		$this->smtp_debug("> ".$cmd."\n");

		return $this->smtp_ok();

	}

	function smtp_error($string)

	{

		$this->log_write("Error: Error occurred while ".$string.".\n");

		return FALSE;

	}

	function log_write($message)

	{

		$this->smtp_debug($message);

		if ($this->log_file == "") {

			return TRUE;

		}

		$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;

		if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {

			$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");

			return FALSE;;

		}

		flock($fp, LOCK_EX);

		fputs($fp, $message);

		fclose($fp);


		return TRUE;

	}


	function strip_comment($address)

	{

		$comment = "\([^()]*\)";

		while (ereg($comment, $address)) {

			$address = ereg_replace($comment, "", $address);

		}


		return $address;

	}


	function get_address($address)

	{

		$address = ereg_replace("([ \t\r\n])+", "", $address);

		$address = ereg_replace("^.*<(.+)>.*$", "\1", $address);

		return $address;

	}

	function smtp_debug($message)

	{

		if ($this->debug) {

			echo $message;

		}

	}

}

?>